Mold-ramming apparatus.



H. HENDERSON. MOLD RAMMING APPARATUS.

APPLIOATION FILED A2328, 190a.

Patented Aug. 17, 1909.

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H. HENDERSON.

MOLD RAMMING APPARATUS.

APPLICATION FILED APR. 2a, 1908.

93 1 ,20 1 Patented Aug. 17, 1909.

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H. HENDERSON.

MOLD RAMMING APPARATUS.

APPLICATION FILED APRZB, 1908.

93 1 ,20 1 Patented Aug. 17, 1909.

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ANDREW. a. GRAHAM co., PNDTO-LNHOGRAPKERS, wAamNmoN n c.

H HEN DBRSON MOLD RAMMING APPARATUS.

APPLIOATIOH FILED APB.28, 1908. .93 1 ,20 1 Patented Aug. 17, 1909.

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Inventor: 0W m A anew. a, GRAHAM 00.. PNOIU-UTNOAIAFNEIS wwunnwu, a c.

UNITED STATES PATENT OFFICE.

HENRY HENDERSON, OF NEW YORK, N. Y.

MOLD-RAMMING APPARATUS.

To all whom it may concern:

Be it known that I, HENRY H NDERSON, a citizen of the. lnited States ofAmerica, residing in the borough of Manhattan, city, county, and Stateof New York, have invented certain Improved Mold-Ramming Apparatus, ofwhich the following is a specification.

This invention relates generally to a style of mold ramming apparatus ofwhich an example is disclosed in my U. S. Patent No.

876,051- of January 7, 1908. There is a rammer shaft and its actuatingpower device carried above the mold cavity. the suspending means iscapable of adjustment to molds of different radius.

A primary feature of the invention is that the rammer shaft isadjustably connected with the pitman or power reciprocated part, so thatwhen lower portions of the mold have been rammed, the rammer shaft maybe released, the cylinder lowered and the two again firmly connected.The power driven device may be of any suitable character. It may be adouble acting reciprocating cylinder motor to be supplied with a fluid,as air, under pressure; or it may be of any other character adapted tooperate to effect ramming of the mold iii the general manner indicatedand the particular construction and character or style of such apparatusmay therefore vary according to the preference of the designer.

Other features of this invention are hereinafter set forth.

In the accompanying drawings Figure l is an elevation partly in sectionof one form of apparatus for simultaneously ramming double molds: Fig. 1is an enlarged elevation of the upper part of Fig. 1. Fig. 2, a

detail cross section on the line 2, 2, of Fig. 1: Fig. 3, an elevationshowing a somewhat different arrangement of apparatus for use in rammingrotating single flasks: Figs. 4L and are respectively similar viewsshowing still other arrangements for use in ramming stationary singleand revolving flasks: Fig. (3, a detail elevation showing a special formof means for rigid suspension of the appa *atus and for supplying themwith fluid under pressure: Fig. 7 is an elevation showing a 'ay ofcarrying the rammer supporting means and for suspending the same fromhorizontally adjustable trucks: 8, a like view showing the rammerapparatus carried by a truck running on tracks ar- Speeification ofLetters Patent.

Application filed. April 28, 1908.

Preferably Patented Aug. 17, 1909.

Serial No. 429,680.

ranged under those of an ordinary jib carriage or traveling crane: Fig.9 is a side elevation: Fig. an end view, and Fig. 11, a plan viewshowing a means for adjusting the radius of a vertically disposed rammerdevice to adapt it to molds of different radius, and for balancing itand affording flexibility or play, irrespective of the idea of changingthe radius of its point of support. Figs. 12, 13 and 1st arerespectively a plan, side elevation and end view of an organizationcomprising a plurality of ramming devices suspended from a single pointof support and each provided with means for independent adjustment ofthe radius of its point of support, and for balancing same and affordingflexibility or play.

In Fig. 1 is shown a hollow cross head 1 in each of the downtnrned endportions 1 of which is secured a swiveling rammer support 2 that may beof the general construction and arrangement disclosed in my prior patentabove mentioned. Air, for instance, under pressure is supplied to thecross head 1 by pipe or hose 3 and the cross head may be suspended by acable 4:, that carries the weight of the apparati 1, and iscounterbalanced so that the cross head 1. may be raised or lowered bythe workman, or workmen, manipulating the apparatus,

The details of construction of the crosshead are shown in Fig. 1 Overthe ends of the central part 1 slip the upper ends of the parts 1 whoseflanges 1 are connected by threaded rods 1 to which are applied nuts 1Packing glands 1 are applied to the joints and the screw-bolts 1 connectthe flanges 1 of the glands with the flanges 1. By this construction orin other appropriate ways, the distance between the centers of theswiveling heads 2 may readily be adjusted to adapt the apparatus toflasks of different sizes. Each swiveling support has a hollow downwardprojection 5 to a lateral opening of which may be connected a flexiblearmored hose or tube 6 which passes over and is supported by the forkedend 7 of a horizontal disposed arm 8 adjustably attached bv set screws 9to the bottom of the extension 5 so as to affordadjustment of the radiusof the point of suspension of the hos-c. The arm 8 is extended at theother end to receive an adjustable counter-weight 10. The hose 6 carriesat its free end a double acting cylinder 11 of which 12 is thecontrolling valve. The lower projecting end 13 of the piston rod ispreferably en larged and has rigidly secured to it a horizontallydisposed clamp 1% that may be made as indicated in Fig. 2,i. c. in theform of a split block having two spring yielding jaws 15, 15, connectedby a bolt about which rocks a lever 16 having a cam faced hub that worksagainst a cam face on one of the jaws. \Vhen the lever arm 16 ishorizomfially disposed the jaws spring apart but when turned verticallythey are clamped upon and rigidly secure a rammer shaft 18,reciprocating ver tically in a tube 19 attached to the armored hose bysuitable couplings 20. The part I have called an armored hose may be inpart a rigid pipe. For instance, a coupling 21 may connect to the end ofthe flexible part 6 a metal pipe 6 carrying at its lower end the doubleacting power cylinder 11. Such a cylinder for ramming molds is well.known and other power devices for that purpose have been proposed. It isimmaterial what may be the character of the powe' device and what may bethe details of the other mechanical construction of the apparatusprovided the operation comprised in this in vention is present.

The point of suspension or support of cable 1 may be, as provided in myabove mentioned patent, adjustable radially as well as in a horizontalarc around a post or column and the cable may be raised and lowered todetermine the relation of the piston and the power cylinder to the topof the mold. In the instance depicted in Fig. 1, there is shown a doublemold, 2'. 6. one having two patterns. Each of the power de vices shownmay be adjusted with reference to the pattern of one of the molds andthe radius of each with reference to the vertical axis of its swivelingsupport may be such that the device may be revolved above the moldcavity.

In the beginning of the operation of ramming the sand at the bottom ofthe mold, the lever arm 16 may be moved into horizontal position and therammer shaft will drop through the clamp or coupling block 15 intoproper relation to the bottom of the mold in which position it may beclamped by throwing the lever 16 into vertical position. If, now, thepower device or power cylinder be set into operation, the ramming of themold may he proceeded with, the rammer being guided by the workman whomay control it either by grasping the cylinder 11 or the guiding tube19, and the cross head 1 and cylinder 11 may gradually be elevated,since they may be counter-balanced, as indicated in Fig. 3, orotherwise. l/Vhen the surface being rammed reaches such height in themold that the cylinder has been lifted beyond convenient reach of theoperator, the clamp is loosened to allow the cylinder to descend to itsoriginal or starting position, or to such extent as may be desired, andthe clamp being reset the operation is proceeded with. One or two suchshifts are usually all that will be required for a mold twelve feet indepth. So far as I am aware, a rammer shaft combined with a power deviceof any appropriate character and susceptible of the manipulation justdescribed, is new. The arrangement enables the operator to control thespeed and adjustment of the power device at all stages of the ramming ofa mold, in a simple, economical and effective manner.

Fig. 3 shows much the same arrangement for ramming rotating flasks. Herethere is indicated a standard 22 carrying at its top a horizontal trackupon which runs a truck 23 over a pulley on which, as well as a pulleyat the upper end of the standard, passes a counter-weighted suspensioncable 24 by which are suspended the tube 19 for guiding the rammer shaft18 and the tube 6 at the end of which is mounted the power cylinder 11.In this case compressed air may be supplied by a flexible hose 25attached at one end to a supply pipe in or along side of the standard 22and at the other with a horizontal pipe 6 attached to the tube 6. Theposition, horizontally, of the power cylinder may be varied by movingthe truck which is controlled by a chain 26 different links of which mayengage a hook or stud 27 on the side of the column.

Fig. a shows an arrangement for either stationary or revolving flasks.There is a swiveling support 2 suspended from an armored air supplyinghose passing over a pulley on the truck. This swiveling support is shownas provided with one radially adjustable suspended armored hose or pipecarrying at its lower end the power cylinder 11 and having secured to itthe guide tube 19 for the rammer shaft 18. Fig. 5 also shows anarrangement for either a stationary or rotary flask. The swivelingsupport carries two suspended rannning devices ar ranged diametricallyopposite each other. The radius of the points of support of the rammingdevices is adjustable as indicated to adapt the pair of rammer shafts tomolds of different radius.

Fig. 6 shows an arrangement resembling Fig. 1 in respect to thecross-head 1 and pair of swiveling rammer supports 2. In

this case, however, the cross-head 1 is formed with a centrally disposedflanged hub 28 that may be bolted to a support which in that case,preferably, would also be vertically adjustable (in the way disclosed inmy prior patent, or otherwise) as well as capable of the otheradjustments described. In these constructions the axes of the swivelingsupports are fixed with reference to each other.

In Fig. 7, 29, 29, represent the carrying wheels of the truck and 30their axle on which are pulleys 31 over which pass the suspending andair supplying armored hose whose lower ends are connected to thecentrally located hubs of the swiveling supports 2. The collars on whichthe pulley 31 turns may be adjusted along the shaft 30 by means of clampbolts 31, to adapt the apparatus to flasks of different diameter, or tothe ramming of a double flask, or two separate flasks. The apparatus ofeach operator is capable of manipulation independently of that of theother one.

Fig. 8 shows a somewhat similar arrangement except that, in thisinstance, the carrying wheels 29, 29, run upon tracks suspended from, orlocated below, the track of the regular jib crane carriage the rails ofwhich are marked 32, 32. The flasks and patterns may be handled by thejib crane.

Figs. 9 to la inclusive illustrate what I deem to be a more satisfactoryorganization for adjusting the radius of the points of suspension of theramming devices. Thus, in Fig. 9, the arm 8 having a bifurcated end 7affording the point of suspension of flexible support 6v is pivoted on ahorizontal pivot 35 preferably located below the swiveling support 2 inline of its axis. This pivot may be in an aperturedfiat lug 37 embracedby apertured jaws of the enlarged block 36 in which is fitted to slidehorizontally the lever 8 that may be adjustably secured in the block byclamp bolts 8 The headed pivot bolt 38 provided with a clamp nut mayserve to lock the part in adjusted position if desired. By rocking theblock 36 about axis 35, the radius of the point of suspension of thehose or rammer supporting device may be varied as indicated by thedotted lines.

Figs. l2, l3 and 14 show an organization wherein there is a plurality oframmer supporting devices. In this construction, the swiveling support 2is formed at the bottom with a cross hub 39 to each end of which and atright angles thereto is a hollow horizontally disposed part 40 to eachend of which is attached a rammer supporting cable or flexible hose 6.Each part- 40 has a flat downwardly projecting lug 41 parallel with thepart 40 and passing through both such lugs i1 is a clamp bolt 42 uponeach end of which is pivoted a pair of rocking blocks 36 in which arefitted to slide horizontally arms 36 adjustably held by set screws asshown and having bifI-rrcated ends 7 that support the hose 6 or otherflexible sup-- porting means. There are, therefore, opposite pairs oframmer supporting means. This arrangement is desirable for ramming largemolds as the rammer devices. of each pair may be placed sufiicient-lyclose together to be controlled by one workman. The points of support ofeach pair of the rammer devices may beadjusted with respect to eachother in the manner described. Each arm 8 or 36. may be counter-weightedto assist the clamping bolt 38 or 42 in holding it in fixed position,and also for the purpose of facilitating its adjustment when the bolt isloosened. In Figs. 13 and 14 this counter weighting is shown as effectedby a suspended weight 43. attached to a cord secured in any one of aseries of apertures in the lever arm 36' to which it is applied. Asstated the bolts 3.8 .and 42 may be employed to. clamp the blocks 36 sothat when an adjustment is made it is permanently maintained. Thegeneral arrangement and behavior would, therefore, be analogous to. thatof other figures. of the drawing. If, however, the arms 8 and 36-(preferably coimtei weighted) are free to rock about their snpportingaxes, adjustment of the point of support 7 may be effected by theworkmans manipulation of the cylinder, 2'. c. by moving it up or down.In that case counter-weighting of the arms 8 or 36 should be such as to.reduce labor to a minimum and counter-weighting of the main support ofthe apparatus should be such that change or movement of such mainsupport to raise or lower the power device, and cooperating rammershaft, will not occur until the arm 8 or 3.6 has reached the limits ofits rocking movementsv which are determined by stops at, 45 againstwhich abut the rocking blocks 36 and The primary purpose, however, ofsuch arrangements as are disclosed in Figs. 9 to 14k is to afford playor flexibility of the suspended rammer devices such as to avoid jammingof the rammer shaft between the flask and pattern. This rocker arm modeof suspension may be used in each of the constructions disclosed in thedrawings.

I claim:

1. Mold ramming apparatus comprising a power device, a verticallymovable rammer shaft, and means for attaching the shaft to and detachingit from the power device to permit of vertical adjustment of one of saidparts relatively to the other.

2. Mold ramming apparatus comprising a power device, a verticallymovable rammer shaft, means for attaching the shaft to and detaching itfrom the power device to permit of Vertical adjustment of one of saidparts relatively to the other and a guide in which the shaft may berec-iprocated vertically.

3. Mold ramming apparatus comprising a vertically adjustable powerdevice, a vertically movable rammer shaft, and means for attaching theshaft to and detaching it from the power device to permit of verticaladjustment of one of said parts relatively to the other.

4. Mold ramming apparatus comprising a vertically movablecounterbalanced power device, a vertically movable rammer shaft, andmeans for attaching the shaft to and detaching it from the power deviceto permit of vertical adjustment of one of said parts relatively to theother.

5. Mold ramming apparatus comprising a vertically adjustable powerdevice, a vertically movable rammer shaft, means for attaching the shaftto and detaching it from the power device to permit of vertical'adjustment of one of said parts relatively to the other and a guide inwhich the shaftmay be reciprocated vertically.

G. Mold ramming apparatus comprising a vertically movablecounterbalanced power device, a vertically movable rammer shaft, meansfor attaching the shaft to and detaching it from the power device topermit of vertical adjustment of one of said parts relatively to theother and a guide in which the shaft may be reciprocated vertically.

7. Mold ramming apparatus comprising a vertically adjustable suspendedpower device, means for adjusting horizontally its point of suspension,a vertically movable rammer shaft and means for attaching the shaft toand detaching it from the power device to permit of vertical adjustmentof one of said parts relatively to the other.

8. Mold ramming apparatus comprising a vertically movable counterbalanced support, a power device suspended therefrom, a rammer shaft andmeans for attaching the rammer shaft to and detaching it from the powerdevice to permit of an adjustment of one of said parts relatively to theother.

9. Mold ramming apparatus comprising a counter balanced supportswiveling about a vertical axis, a power device suspended therefrom, avertically movable rammer shaft and means for attaching the rammer shaftto and detaching it from'the power device to permit of adjustment of oneof said parts relatively to the other.

1.0. Mold ramming apparatus comprising a counter balanced supportswiveling about a vertical axis, a power device suspended therefrom, avertically movable rammer shaft, means for attaching the rammer shaft toand detaching it from the power device to permit of adjustment of one ofsaid parts relatively to the other and means for adjusting the radius ofthe point of sus' pension of the power device.

11.. Mold ramming apparatus comprising a vertically suspended member, apower cylinder carried at the lower end. thereof, a guide attached tothe member and held parallel therewith, a rammer shaft adapted toreciprocate vertically within the guide, means for attaching the shaftto and detaching it from the piston of the power cylinder to permit ofadjustment and means permitting the power cylinder to be raised andlowered.

12. Mold ramming apparatus comprising a power device suspended by aflexible member, a rammer shaft operated by the power device and an armrocking about a horizontal axis Whose free end engages the flexiblemember and constitutes the point of suspension thereof whereby onrocking said arm the radius of the point of suspension may be varied.

13. Mold ramming apparatus comprising a counterbalanced support, aflexible member extending laterally therefrom, an arm rocking about ahorizontal axis and over the end of which the flexible member passes, apower device and a rammer shaft actuated by it and suspended by saidflexible member whereby on rocking the arm the point of suspension ofthe power device may be varied.

14. Wold ramming apparatus comprising a counter balanced support, aflexible member extending laterally therefrom, an arm rocking about ahorizontal axis and over the end of which the flexible member passes, apower device, a rammer shaft actuated by it and suspended by saidflexible member whereby on rocking the arm the point of suspension ofthe power device may be varied and stops limiting the vertical rockingmovement of said arm.

15. Mold ramming apparatus comprising a horizontal arm mounted to rockfreely vertically within limits, a flexible member extending over theend of said arm and a power device and rammer shaft suspended by saidflexible member, whereby the point of suspension may be varied bycausing the end of the arm to rock vertically.

16. Mold ramming apparatus comprising pivoted rocking arm and a powerdevice and rammer shaft suspended from and flexibly connected therewith.

17. Hold ramming apparatus comprising a support swiveling about avertical axis, a rocking arm pivoted below the support and adapted torock vertically and a power device and rammer shaft suspended from andflexibly connected with the rocking arm.

18. Mold ramming apparatus comprising a vertically rocking pivoted armand a power device and rammer shaft suspended therefrom.

19. Mold ramming apparatus comprising a support swiveling about avertical axis, a vertically rocking arm pivoted below the support andconnected therewith and a power device and rammer shaft suspended fromthe rocking arm. I 20. Mold ramming apparatus comprising a plurality offluid pressure power devices and rammer shafts actuated thereby allsuspended from a common point of suspension, and a'single supply hosefor supplying fluid under pressure to all of the power devices.

21. Mold ramming apparatus comprising a pair of suspended swivelingsupports, means for adjusting the distance between their centers and apower device and rammer shaft actuated thereby suspended from each ofsaid supports.

Mold ramming apparatus comprising a pair of swiveling supports, meansfor ad justing the distance between their centers and a power device andrammer shaft actuated thereby suspended from each of said supports.

Mold ramming apparatus comprising a hollow cross-head, a cable forsuspending it and a flexible hose connected with it, adjustable hollowend portions of the crosshead, flexible hose connected therewith,swiveling supports suspended by said hose, hose suspended from saidsupports, fluid pressure power device connected with the hose and rammershafts therefor.

24. Mold ramming apparatus comprising a power device, a verticallymovable rammer shaft arranged parallel with the axis thereof, and meansfor attaching the shaft to and detaching it from the power device topermit of vertical adjustment of one of said parts relatively to theother.

25. Mold ramming apparatus comprising a power device, a verticallymovable rammer shaft arranged parallel with the axis thereof, means forattaching the shaft to and de, taching it from the power device topermit of vertical adjustment of one of said parts relatively to theother and a guide in which the shaft may be reciprocated vertically.

26. Mold ramming apparatus comprising a vertically adjustable powerdevice, a vertically movable rammer shaft arranged parallel with theaxis thereof, and means for attaching the shaft to and detaching it fromthe power device to permit of vertical adjustment of one of said partsrelatively to the other.

In testimony whereof, I have hereunto subscribed my name.

HENRY HENDERSON.

Witnesses 7M. ST. G. KENT, L. F. BROWNING.

